Maintainers.txt: Remove EdkCompatibilityPkg information

[mirror_edk2.git] / EdkCompatibilityPkg / Foundation / Library / Dxe / Graphics / Graphics.c

/*++\r
\r
Copyright (c) 2004 - 2012, Intel Corporation. All rights reserved.<BR>\r
This program and the accompanying materials                          \r
are licensed and made available under the terms and conditions of the BSD License         \r
which accompanies this distribution.  The full text of the license may be found at        \r
http://opensource.org/licenses/bsd-license.php                                            \r
                                                                                          \r
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,                     \r
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.             \r
\r
Module Name:\r
\r
  Graphics.c\r
\r
Abstract:\r
\r
  Support for Basic Graphics operations.\r
\r
  BugBug: Currently *.BMP files are supported. This will be replaced\r
          when Tiano graphics format is supported.\r
\r
--*/\r
\r
#include "Tiano.h"\r
#include "EfiDriverLib.h"\r
#include "GraphicsLib.h"\r
\r
EFI_STATUS\r
GetGraphicsBitMapFromFV (\r
  IN  EFI_GUID      *FileNameGuid,\r
  OUT VOID          **Image,\r
  OUT UINTN         *ImageSize\r
  )\r
/*++\r
\r
Routine Description:\r
\r
  Return the graphics image file named FileNameGuid into Image and return it's\r
  size in ImageSize. All Firmware Volumes (FV) in the system are searched for the\r
  file name.\r
\r
Arguments:\r
\r
  FileNameGuid  - File Name of graphics file in the FV(s).\r
\r
  Image         - Pointer to pointer to return graphics image.  If NULL, a \r
                  buffer will be allocated.\r
\r
  ImageSize     - Size of the graphics Image in bytes. Zero if no image found.\r
\r
\r
Returns: \r
\r
  EFI_SUCCESS          - Image and ImageSize are valid. \r
  EFI_BUFFER_TOO_SMALL - Image not big enough. ImageSize has required size\r
  EFI_NOT_FOUND        - FileNameGuid not found\r
\r
--*/\r
{\r
  return GetGraphicsBitMapFromFVEx (NULL, FileNameGuid, Image, ImageSize);\r
}\r
\r
EFI_STATUS\r
GetGraphicsBitMapFromFVEx (\r
  IN  EFI_HANDLE    ImageHandle,\r
  IN  EFI_GUID      *FileNameGuid,\r
  OUT VOID          **Image,\r
  OUT UINTN         *ImageSize\r
  )\r
/*++\r
\r
Routine Description:\r
\r
  Return the graphics image file named FileNameGuid into Image and return it's\r
  size in ImageSize. All Firmware Volumes (FV) in the system are searched for the\r
  file name.\r
\r
Arguments:\r
\r
  ImageHandle   - The driver image handle of the caller. The parameter is used to\r
                  optimize the loading of the image file so that the FV from which\r
                  the driver image is loaded will be tried first. \r
\r
  FileNameGuid  - File Name of graphics file in the FV(s).\r
\r
  Image         - Pointer to pointer to return graphics image.  If NULL, a \r
                  buffer will be allocated.\r
\r
  ImageSize     - Size of the graphics Image in bytes. Zero if no image found.\r
\r
\r
Returns: \r
\r
  EFI_SUCCESS          - Image and ImageSize are valid. \r
  EFI_BUFFER_TOO_SMALL - Image not big enough. ImageSize has required size\r
  EFI_NOT_FOUND        - FileNameGuid not found\r
\r
--*/\r
{\r
  return GetImageEx (\r
           ImageHandle,\r
           FileNameGuid,\r
           EFI_SECTION_RAW,\r
           Image,\r
           ImageSize,\r
           FALSE\r
           );\r
}\r
\r
\r
EFI_STATUS\r
ConvertBmpToGopBlt (\r
  IN  VOID      *BmpImage,\r
  IN  UINTN     BmpImageSize,\r
  IN OUT VOID   **GopBlt,\r
  IN OUT UINTN  *GopBltSize,\r
  OUT UINTN     *PixelHeight,\r
  OUT UINTN     *PixelWidth\r
  )\r
/*++\r
\r
Routine Description:\r
\r
  Convert a *.BMP graphics image to a GOP/UGA blt buffer. If a NULL Blt buffer\r
  is passed in a GopBlt buffer will be allocated by this routine. If a GopBlt\r
  buffer is passed in it will be used if it is big enough.\r
\r
Arguments:\r
\r
  BmpImage      - Pointer to BMP file\r
\r
  BmpImageSize  - Number of bytes in BmpImage\r
\r
  GopBlt        - Buffer containing GOP version of BmpImage.\r
\r
  GopBltSize    - Size of GopBlt in bytes.\r
\r
  PixelHeight   - Height of GopBlt/BmpImage in pixels\r
\r
  PixelWidth    - Width of GopBlt/BmpImage in pixels\r
\r
\r
Returns: \r
\r
  EFI_SUCCESS           - GopBlt and GopBltSize are returned. \r
  EFI_UNSUPPORTED       - BmpImage is not a valid *.BMP image\r
  EFI_BUFFER_TOO_SMALL  - The passed in GopBlt buffer is not big enough.\r
                          GopBltSize will contain the required size.\r
  EFI_OUT_OF_RESOURCES  - No enough buffer to allocate\r
\r
--*/\r
{\r
  UINT8                         *Image;\r
  UINT8                         *ImageHeader;\r
  BMP_IMAGE_HEADER              *BmpHeader;\r
  BMP_COLOR_MAP                 *BmpColorMap;\r
  EFI_GRAPHICS_OUTPUT_BLT_PIXEL *BltBuffer;\r
  EFI_GRAPHICS_OUTPUT_BLT_PIXEL *Blt;\r
  UINT64                        BltBufferSize;\r
  UINTN                         Index;\r
  UINTN                         Height;\r
  UINTN                         Width;\r
  UINTN                         ImageIndex;\r
  UINTN                         DataSizePerLine;\r
  BOOLEAN                       IsAllocated;\r
  UINT32                        ColorMapNum;\r
\r
  if (sizeof (BMP_IMAGE_HEADER) > BmpImageSize) {\r
    return EFI_INVALID_PARAMETER;\r
  }\r
\r
  BmpHeader = (BMP_IMAGE_HEADER *) BmpImage;\r
\r
  if (BmpHeader->CharB != 'B' || BmpHeader->CharM != 'M') {\r
    return EFI_UNSUPPORTED;\r
  }\r
\r
  //\r
  // Doesn't support compress.\r
  //\r
  if (BmpHeader->CompressionType != 0) {\r
    return EFI_UNSUPPORTED;\r
  }\r
\r
  //\r
  // Only support BITMAPINFOHEADER format.\r
  // BITMAPFILEHEADER + BITMAPINFOHEADER = BMP_IMAGE_HEADER\r
  //\r
  if (BmpHeader->HeaderSize != sizeof (BMP_IMAGE_HEADER) - ((UINTN) &(((BMP_IMAGE_HEADER *)0)->HeaderSize))) {\r
    return EFI_UNSUPPORTED;\r
  }\r
\r
  //\r
  // The data size in each line must be 4 byte alignment.\r
  //\r
  DataSizePerLine = ((BmpHeader->PixelWidth * BmpHeader->BitPerPixel + 31) >> 3) & (~0x3);\r
  BltBufferSize = MultU64x32 (DataSizePerLine, BmpHeader->PixelHeight);\r
  if (BltBufferSize > (UINT32) ~0) {\r
    return EFI_INVALID_PARAMETER;\r
  }\r
\r
  if ((BmpHeader->Size != BmpImageSize) || \r
      (BmpHeader->Size < BmpHeader->ImageOffset) ||\r
      (BmpHeader->Size - BmpHeader->ImageOffset !=  BmpHeader->PixelHeight * DataSizePerLine)) {\r
    return EFI_INVALID_PARAMETER;\r
  }\r
\r
  //\r
  // Calculate Color Map offset in the image.\r
  //\r
  Image       = BmpImage;\r
  BmpColorMap = (BMP_COLOR_MAP *) (Image + sizeof (BMP_IMAGE_HEADER));\r
  if (BmpHeader->ImageOffset < sizeof (BMP_IMAGE_HEADER)) {\r
    return EFI_INVALID_PARAMETER;\r
  }\r
\r
  if (BmpHeader->ImageOffset > sizeof (BMP_IMAGE_HEADER)) {\r
    switch (BmpHeader->BitPerPixel) {\r
      case 1:\r
        ColorMapNum = 2;\r
        break;\r
      case 4:\r
        ColorMapNum = 16;\r
        break;\r
      case 8:\r
        ColorMapNum = 256;\r
        break;\r
      default:\r
        ColorMapNum = 0;\r
        break;\r
      }\r
    if (BmpHeader->ImageOffset - sizeof (BMP_IMAGE_HEADER) != sizeof (BMP_COLOR_MAP) * ColorMapNum) {\r
      return EFI_INVALID_PARAMETER;\r
    }\r
  }\r
\r
  //\r
  // Calculate graphics image data address in the image\r
  //\r
  Image         = ((UINT8 *) BmpImage) + BmpHeader->ImageOffset;\r
  ImageHeader   = Image;\r
\r
  BltBufferSize = MultU64x32 ((UINT64) BmpHeader->PixelWidth, BmpHeader->PixelHeight);\r
  //\r
  // Ensure the BltBufferSize * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL) doesn't overflow\r
  //\r
  if (BltBufferSize > DivU64x32 ((UINTN) ~0, sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL), NULL)) {\r
     return EFI_UNSUPPORTED;\r
  }\r
  BltBufferSize = MultU64x32 (BltBufferSize, sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL));\r
\r
  IsAllocated   = FALSE;\r
  if (*GopBlt == NULL) {\r
    *GopBltSize = (UINTN) BltBufferSize;\r
    *GopBlt     = EfiLibAllocatePool (*GopBltSize);\r
    IsAllocated = TRUE;\r
    if (*GopBlt == NULL) {\r
      return EFI_OUT_OF_RESOURCES;\r
    }\r
  } else {\r
    if (*GopBltSize < (UINTN) BltBufferSize) {\r
      *GopBltSize = (UINTN) BltBufferSize;\r
      return EFI_BUFFER_TOO_SMALL;\r
    }\r
  }\r
\r
  *PixelWidth   = BmpHeader->PixelWidth;\r
  *PixelHeight  = BmpHeader->PixelHeight;\r
\r
  //\r
  // Convert image from BMP to Blt buffer format\r
  //\r
  BltBuffer = *GopBlt;\r
  for (Height = 0; Height < BmpHeader->PixelHeight; Height++) {\r
    Blt = &BltBuffer[(BmpHeader->PixelHeight - Height - 1) * BmpHeader->PixelWidth];\r
    for (Width = 0; Width < BmpHeader->PixelWidth; Width++, Image++, Blt++) {\r
      switch (BmpHeader->BitPerPixel) {\r
      case 1:\r
        //\r
        // Convert 1bit BMP to 24-bit color\r
        //\r
        for (Index = 0; Index < 8 && Width < BmpHeader->PixelWidth; Index++) {\r
          Blt->Red    = BmpColorMap[((*Image) >> (7 - Index)) & 0x1].Red;\r
          Blt->Green  = BmpColorMap[((*Image) >> (7 - Index)) & 0x1].Green;\r
          Blt->Blue   = BmpColorMap[((*Image) >> (7 - Index)) & 0x1].Blue;\r
          Blt++;\r
          Width++;\r
        }\r
\r
        Blt --;\r
        Width --;\r
        break;\r
\r
      case 4:\r
        //\r
        // Convert BMP Palette to 24-bit color\r
        //\r
        Index       = (*Image) >> 4;\r
        Blt->Red    = BmpColorMap[Index].Red;\r
        Blt->Green  = BmpColorMap[Index].Green;\r
        Blt->Blue   = BmpColorMap[Index].Blue;\r
        if (Width < (BmpHeader->PixelWidth - 1)) {\r
          Blt++;\r
          Width++;\r
          Index       = (*Image) & 0x0f;\r
          Blt->Red    = BmpColorMap[Index].Red;\r
          Blt->Green  = BmpColorMap[Index].Green;\r
          Blt->Blue   = BmpColorMap[Index].Blue;\r
        }\r
        break;\r
\r
      case 8:\r
        //\r
        // Convert BMP Palette to 24-bit color\r
        //\r
        Blt->Red    = BmpColorMap[*Image].Red;\r
        Blt->Green  = BmpColorMap[*Image].Green;\r
        Blt->Blue   = BmpColorMap[*Image].Blue;\r
        break;\r
\r
      case 24:\r
        Blt->Blue   = *Image++;\r
        Blt->Green  = *Image++;\r
        Blt->Red    = *Image;\r
        break;\r
\r
      default:\r
        if (IsAllocated) {\r
          gBS->FreePool (*GopBlt);\r
          *GopBlt = NULL;\r
        }\r
        return EFI_UNSUPPORTED;\r
        break;\r
      };\r
\r
    }\r
\r
    ImageIndex = (UINTN) (Image - ImageHeader);\r
    if ((ImageIndex % 4) != 0) {\r
      //\r
      // Bmp Image starts each row on a 32-bit boundary!\r
      //\r
      Image = Image + (4 - (ImageIndex % 4));\r
    }\r
  }\r
\r
  return EFI_SUCCESS;\r
}\r
\r
\r
EFI_STATUS\r
LockKeyboards (\r
  IN  CHAR16    *Password\r
  )\r
/*++\r
\r
Routine Description:\r
  Use Console Control Protocol to lock the Console In Spliter virtual handle. \r
  This is the ConInHandle and ConIn handle in the EFI system table. All key\r
  presses will be ignored until the Password is typed in. The only way to\r
  disable the password is to type it in to a ConIn device.\r
\r
Arguments:\r
  Password - Password used to lock ConIn device\r
\r
\r
Returns: \r
\r
  EFI_SUCCESS     - ConsoleControl has been flipped to graphics and logo\r
                          displayed.\r
  EFI_UNSUPPORTED - Logo not found\r
\r
--*/\r
{\r
  EFI_STATUS                    Status;\r
  EFI_CONSOLE_CONTROL_PROTOCOL  *ConsoleControl;\r
\r
  Status = gBS->LocateProtocol (&gEfiConsoleControlProtocolGuid, NULL, (VOID**)&ConsoleControl);\r
  if (EFI_ERROR (Status)) {\r
    return EFI_UNSUPPORTED;\r
  }\r
\r
  Status = ConsoleControl->LockStdIn (ConsoleControl, Password);\r
  return Status;\r
}\r
\r
EFI_STATUS\r
EnableQuietBoot (\r
  IN  EFI_GUID  *LogoFile\r
  )\r
/*++\r
\r
Routine Description:\r
\r
  Use Console Control to turn off UGA based Simple Text Out consoles from going\r
  to the UGA device. Put up LogoFile on every UGA device that is a console\r
\r
Arguments:\r
\r
  LogoFile - File name of logo to display on the center of the screen.\r
\r
\r
Returns: \r
\r
  EFI_SUCCESS           - ConsoleControl has been flipped to graphics and logo\r
                          displayed.\r
  EFI_UNSUPPORTED       - Logo not found\r
\r
--*/\r
{\r
  return EnableQuietBootEx (LogoFile, NULL);\r
}\r
\r
EFI_STATUS\r
EnableQuietBootEx (\r
  IN  EFI_GUID    *LogoFile,\r
  IN  EFI_HANDLE  ImageHandle\r
  )\r
/*++\r
\r
Routine Description:\r
\r
  Use Console Control to turn off GOP/UGA based Simple Text Out consoles from going\r
  to the GOP/UGA device. Put up LogoFile on every GOP/UGA device that is a console\r
\r
Arguments:\r
\r
  LogoFile    - File name of logo to display on the center of the screen.\r
  ImageHandle - The driver image handle of the caller. The parameter is used to\r
                optimize the loading of the logo file so that the FV from which\r
                the driver image is loaded will be tried first.\r
\r
\r
Returns: \r
\r
  EFI_SUCCESS           - ConsoleControl has been flipped to graphics and logo\r
                          displayed.\r
  EFI_UNSUPPORTED       - Logo not found\r
\r
--*/\r
{\r
  EFI_STATUS                    Status;\r
  EFI_CONSOLE_CONTROL_PROTOCOL  *ConsoleControl;\r
  EFI_OEM_BADGING_PROTOCOL      *Badging;\r
  UINT32                        SizeOfX;\r
  UINT32                        SizeOfY;\r
  INTN                          DestX;\r
  INTN                          DestY;\r
  UINT8                         *ImageData;\r
  UINTN                         ImageSize;\r
  UINTN                         BltSize;\r
  UINT32                        Instance;\r
  EFI_BADGING_FORMAT            Format;\r
  EFI_BADGING_DISPLAY_ATTRIBUTE Attribute;\r
  UINTN                         CoordinateX;\r
  UINTN                         CoordinateY;\r
  UINTN                         Height;\r
  UINTN                         Width;\r
  EFI_GRAPHICS_OUTPUT_BLT_PIXEL *Blt;\r
  EFI_UGA_DRAW_PROTOCOL         *UgaDraw;\r
  UINT32                        ColorDepth;\r
  UINT32                        RefreshRate;\r
  EFI_GRAPHICS_OUTPUT_PROTOCOL  *GraphicsOutput;\r
\r
  Status = gBS->LocateProtocol (&gEfiConsoleControlProtocolGuid, NULL, (VOID**)&ConsoleControl);\r
  if (EFI_ERROR (Status)) {\r
    return EFI_UNSUPPORTED;\r
  }\r
\r
  UgaDraw = NULL;\r
  //\r
  // Try to open GOP first\r
  //\r
  Status = gBS->HandleProtocol (gST->ConsoleOutHandle, &gEfiGraphicsOutputProtocolGuid, (VOID**)&GraphicsOutput);\r
  if (EFI_ERROR (Status)) {\r
    GraphicsOutput = NULL;\r
    //\r
    // Open GOP failed, try to open UGA\r
    //\r
    Status = gBS->HandleProtocol (gST->ConsoleOutHandle, &gEfiUgaDrawProtocolGuid, (VOID**)&UgaDraw);\r
    if (EFI_ERROR (Status)) {\r
      return EFI_UNSUPPORTED;\r
    }\r
  }\r
\r
  Badging = NULL;\r
  Status  = gBS->LocateProtocol (&gEfiOEMBadgingProtocolGuid, NULL, (VOID**)&Badging);\r
\r
  ConsoleControl->SetMode (ConsoleControl, EfiConsoleControlScreenGraphics);\r
\r
  if (GraphicsOutput != NULL) {\r
    SizeOfX = GraphicsOutput->Mode->Info->HorizontalResolution;\r
    SizeOfY = GraphicsOutput->Mode->Info->VerticalResolution;\r
  } else if (UgaDraw != NULL) {\r
    Status = UgaDraw->GetMode (UgaDraw, &SizeOfX, &SizeOfY, &ColorDepth, &RefreshRate);\r
    if (EFI_ERROR (Status)) {\r
      return EFI_UNSUPPORTED;\r
    }\r
  } else {\r
    return EFI_UNSUPPORTED;\r
  }\r
\r
  Instance = 0;\r
  while (1) {\r
    ImageData = NULL;\r
    ImageSize = 0;\r
\r
    if (Badging != NULL) {\r
      Status = Badging->GetImage (\r
                          Badging,\r
                          &Instance,\r
                          &Format,\r
                          &ImageData,\r
                          &ImageSize,\r
                          &Attribute,\r
                          &CoordinateX,\r
                          &CoordinateY\r
                          );\r
      if (EFI_ERROR (Status)) {\r
        return Status;\r
      }\r
\r
      //\r
      // Currently only support BMP format\r
      //\r
      if (Format != EfiBadgingFormatBMP) {\r
        gBS->FreePool (ImageData);\r
        continue;\r
      }\r
    } else {\r
      Status = GetGraphicsBitMapFromFVEx (ImageHandle, LogoFile, (VOID **) &ImageData, &ImageSize);\r
      if (EFI_ERROR (Status)) {\r
        return EFI_UNSUPPORTED;\r
      }\r
\r
      CoordinateX = 0;\r
      CoordinateY = 0;\r
      Attribute   = EfiBadgingDisplayAttributeCenter;\r
    }\r
\r
    Blt = NULL;\r
    Status = ConvertBmpToGopBlt (\r
              ImageData,\r
              ImageSize,\r
              (VOID**)&Blt,\r
              &BltSize,\r
              &Height,\r
              &Width\r
              );\r
    if (EFI_ERROR (Status)) {\r
      gBS->FreePool (ImageData);\r
      if (Badging == NULL) {\r
        return Status;\r
      } else {\r
        continue;\r
      }\r
    }\r
\r
    switch (Attribute) {\r
    case EfiBadgingDisplayAttributeLeftTop:\r
      DestX = CoordinateX;\r
      DestY = CoordinateY;\r
      break;\r
\r
    case EfiBadgingDisplayAttributeCenterTop:\r
      DestX = (SizeOfX - Width) / 2;\r
      DestY = CoordinateY;\r
      break;\r
\r
    case EfiBadgingDisplayAttributeRightTop:\r
      DestX = (SizeOfX - Width - CoordinateX);\r
      DestY = CoordinateY;;\r
      break;\r
\r
    case EfiBadgingDisplayAttributeCenterRight:\r
      DestX = (SizeOfX - Width - CoordinateX);\r
      DestY = (SizeOfY - Height) / 2;\r
      break;\r
\r
    case EfiBadgingDisplayAttributeRightBottom:\r
      DestX = (SizeOfX - Width - CoordinateX);\r
      DestY = (SizeOfY - Height - CoordinateY);\r
      break;\r
\r
    case EfiBadgingDisplayAttributeCenterBottom:\r
      DestX = (SizeOfX - Width) / 2;\r
      DestY = (SizeOfY - Height - CoordinateY);\r
      break;\r
\r
    case EfiBadgingDisplayAttributeLeftBottom:\r
      DestX = CoordinateX;\r
      DestY = (SizeOfY - Height - CoordinateY);\r
      break;\r
\r
    case EfiBadgingDisplayAttributeCenterLeft:\r
      DestX = CoordinateX;\r
      DestY = (SizeOfY - Height) / 2;\r
      break;\r
\r
    case EfiBadgingDisplayAttributeCenter:\r
      DestX = (SizeOfX - Width) / 2;\r
      DestY = (SizeOfY - Height) / 2;\r
      break;\r
\r
    default:\r
      DestX = CoordinateX;\r
      DestY = CoordinateY;\r
      break;\r
    }\r
\r
    if ((DestX >= 0) && (DestY >= 0)) {\r
      if (GraphicsOutput != NULL) {\r
        Status = GraphicsOutput->Blt (\r
                            GraphicsOutput,\r
                            Blt,\r
                            EfiBltBufferToVideo,\r
                            0,\r
                            0,\r
                            (UINTN) DestX,\r
                            (UINTN) DestY,\r
                            Width,\r
                            Height,\r
                            Width * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL)\r
                            );\r
      } else {\r
        Status = UgaDraw->Blt (\r
                            UgaDraw,\r
                            (EFI_UGA_PIXEL *) Blt,\r
                            EfiUgaBltBufferToVideo,\r
                            0,\r
                            0,\r
                            (UINTN) DestX,\r
                            (UINTN) DestY,\r
                            Width,\r
                            Height,\r
                            Width * sizeof (EFI_UGA_PIXEL)\r
                            );\r
      }\r
    }\r
\r
    gBS->FreePool (ImageData);\r
    gBS->FreePool (Blt);\r
\r
    if (Badging == NULL) {\r
      break;\r
    }\r
  }\r
\r
  return Status;\r
}\r
\r
\r
EFI_STATUS\r
DisableQuietBoot (\r
  VOID\r
  )\r
/*++\r
\r
Routine Description:\r
\r
  Use Console Control to turn on GOP/UGA based Simple Text Out consoles. The GOP/UGA \r
  Simple Text Out screens will now be synced up with all non GOP/UGA output devices\r
\r
Arguments:\r
\r
  NONE\r
\r
Returns: \r
\r
  EFI_SUCCESS           - GOP/UGA devices are back in text mode and synced up.\r
  EFI_UNSUPPORTED       - Logo not found\r
\r
--*/\r
{\r
  EFI_STATUS                    Status;\r
  EFI_CONSOLE_CONTROL_PROTOCOL  *ConsoleControl;\r
\r
  Status = gBS->LocateProtocol (&gEfiConsoleControlProtocolGuid, NULL, (VOID**)&ConsoleControl);\r
  if (EFI_ERROR (Status)) {\r
    return EFI_UNSUPPORTED;\r
  }\r
\r
  return ConsoleControl->SetMode (ConsoleControl, EfiConsoleControlScreenText);\r
}\r